These small Peristaltic pumps are really cool items. The small PP60 model wil fit on a NEMA 17 model steppermotor, the bigger PP200 models needs a flange to fit to a nema 23 motor. The flange will soon also be on sale. Anyway you can use these pumps for machines that need precise dosing of fluids. The pumps are ISO9001/2000 Qualified, and can be used for foods also.